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Commission continues review of Borden Pond trail work; plan includes beaver deceivers, turf reinforcement and invasive plant control
Summary
A conservation‑land trail project near Borden Pond was discussed; applicants proposed turf reinforcement matting to prevent erosion, beaver deceivers to protect culverts and a multi‑year invasive species removal and live‑staking program; Natural Heritage comments were requested and the hearing was left open.
Town consultants detailed a shoreline and trail stabilization plan for land adjacent to Borden Pond and the Great Meadows National Wildlife Refuge, proposing a turf reinforcement mat at a low segment of the trail, beaver deceivers at two culverts, and invasive species control including live stakes and seeding with a New England wetland seed mix.
Dan Carr of Stampski and McNary described the project’s core engineering fixes: undersized culverts allow water to overtop a low portion of the trail during large storms, causing erosion. The firm proposes installing a turf reinforcement mat in the low segment and placing “beaver deceivers” — protective cages around the culvert intakes and outlets — to reduce beaver‑related blockages that have repeatedly affected flow.
Miles, the vegetation specialist on the team, outlined an invasive species removal and revegetation plan. He said crews would hand‑pull small stems and use a “cut‑and‑dab” herbicide application on stems greater than roughly 1 inch caliper. The team plans live‑staking with on‑site native willow, dogwood and buttonbush, overseeding exposed areas with a wetland seed mix, and staged follow‑up work through the growing season. Miles noted some seeds in the mix require cold stratification and may germinate after the coming winter.
Commissioners focused on details for wildlife and historic resource review. A Natural Heritage & Endangered Species Program (NHESP) filing was confirmed and staff requested proof of mailing; Heritage has 30 days to respond. Commissioners left the hearing open to accommodate NHESP comments and to finalize conditions tied to the refuge adjacency.
Sarah Bimler, chair, asked for documentation on the proposed turf reinforcement product and for proof of the Heritage submission. Commissioners also asked for a planting and stockpile plan, and requested that mitigation plantings be located as close to the wetland as feasible rather than only along the driveway or trail edge.
The commission signaled support for the project’s technical approach but kept the hearing open pending NHESP comments and final plan updates. Staff will incorporate any Heritage conditions into the order of conditions if necessary and continue the matter to the April 23 meeting.
